The best replacement for ulceration is erosion.

The best alternatives to ulceration are rated as following:
★★★★★  erosion
★★  gangrene
★  abrasion
  gastrointestinal bleeding

Your alternative for ulceration is not listed? Suggest!
Speaking about ulceration, one probably shouldn't forget about malignant melanoma.

Other search terms related to ulceration and their ratings are:
★★★★★ malignant melanoma
You have in mind a companion for ulceration and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ulceration in all years. Click on graph for more.
ulceration
erosion
gangrene